Long Island Mollusc a. 3^ 



Natica heros Say 



IS'atica triseriata Say 



Natica duplicata Say 



Cerithiopsis terebelliim St Huntington. 



Cerithiopsis Emersonii St Huntington. 



Eanella caudata Say 



Purpura lapillus'Za??^ Montauk. 



Kassa trivittata Say 



Nassa vibex Say Xorthport. 



Nassa obsoleta Say 



Buccinnm undatum Limi Montauk. 



Pyrula canaliculata Briog 



Pjrula carica Bintg 



Columbella lunata Sowh 



Columbella avara Say 



Pleurotoma plicatum C. B. Ad Greenport. 



Tectibranchiata. 



Bulla oryza Tott Huntington. 



Bulla canaliculata Say Little Gull Island. 



Bulla solitaria Say Huntington. 



Melampus corneus St 



Melampus denticulatus St Huntington. 



Pneumobranchiata. 



Ancylus fuscus C. B. Ad East Marion. 



Gundlacbia Stimpsoniana Smith Greenport. 



Limnea columella Say Coldspring. 



Limnea humilis Say Lloyd's Keck. 



Limnea desidiosa Say Astoria. 



Phjsa beterostropha Say 



Pbysa elongata Say Centerport. 



Planorbis trivolvis Say Riverbead. 



Planorbis bicarinatus Say Huntington. 



Planorbis armigerus Say 



Planorbis parvus Say 



Planorbis dilatatus Gould Soutbold. 



Helix arborea Say 



Helix indentata Say Huntington. 



Helix Binneyana Morse Huntington. 



Helix lineata Say Oyster Bay. 



Helix alternata Say Gardiner's Island. 



